[goheels]

SCB, written by Bert Sugar
2nd edition, p 176

It lists only 6 variations for 1968:

No. 107 issues with "course" (sic) or "fine" 'cloth' background on front
No. 179 issued with or without incomplete sentence at end of biography: "Bill was used sparingly but still"
No. 258 issued with '1968 Rookie Stars' printed in orange or red
No. 278 issued with copyright printed on left or right side
No. 454 issued with two cropping forms of picture of Frank Robinson
No. 518 issued with No. 539 as American League or Major League Rookies

Interesting that it is the first mention of a cropping variation for a CL inset photo.
Only has variations for 4 of the 7 CLs.
As expected, while there are cropping variations for all CLs including the #67 1st series CL with Kaat, only the more blatant difference is mentioned, #107 being plain as day.

Here are the serial historical listings of variations in the Beckett/Eckes Sport Americana Price Guides:

1983, 5th edition, Casey Cox yellow team variation 66a, 66b

Dont have 1984 6th edition

1985, 7th edition adds CL 7 card 518a ML Rookies on 539, 518b AL Rookies on 539

1986, 8th edition adds nothing

1987, 9th edition adds Eddie Brinkman yellow team variation 49a, 49b
adds 107a as tan wide mesh and 107b as brown fine mesh
adds 356a CL 5 as head centered, 356b as head shifted right within circle
adds 454a CL 6 as cap complete within circle, 454b as cap partially within circle

1988, 10th edition adds 400a McCormick YL, 400b McCormick WL

Interesting that the Stoneman 179 card and the 258 are not mentioned. One would think that the list would be rolling and cumulative.

I don't have on hand any SA editions after that. Not sure when the #10 Lonborg/Lonberg was listed.

The Beckett/Eckes SA guide was the standard bearer in its day.

By 1991 with the proliferation of price guides went from books to family Bible size.

The Dick Gilkeson BB Card Variation Book Volume II, September 1989, lists the following 1968 variations:

10 Pitching Ldrs
49 Brinkman
66 Cox
67 1st CL
107 2nd CL
192 3rd CL
258 Cubs Rookies
278 4th CL
356 5th CL
400 McCormick
454 6th CL
518 7th CL